Window-lock



GEORGE W. STEIN, OF CHICAGO, ILLINOIS.

WINDOW-LOCK.

Application filed February 14, 1916.

lock.

An object of the invention is to provide a novel form of lock to beattached either to a window frame or one of the sashes, whereby, in thefirst instance, the lower sash may be locked in closing position andwhereby, in the second instance, the upper sash may be partly loweredand opened, to permit of proper ventilation, and then locked againstfurther opening.

Another object is to provide a lock of this character which is simple inconstruction, easy to manufacture, and effective in carrying out thepurpose for which it is designed.

The inventive idea involved is capable of receiving` a variety ofmechanical expressions, one of which, for the purpose of illustratingthe invention, is shown in the accompanying drawing, in which- A/Figure1 is a front elevation'of a window frame and sashes showing theinvention applied thereto. Fig. 2 is a section on the line 02-2 of Fig.1, showing the sashes in closed and locked positions. Fig. 3 is a viewsimilar to Fig. 2 showing the lower sash in locked position and theupper sash opened and locked against further opening. Fig. l

is a section on the line 4 4 of Fig. 2.

Referring more particularly to the accompanying drawing in which likereference characters indicate similar parts, the numeral 5 indicates awindow or sash frame having the upper and lower sashes 6 and 7 slidablymounted therein in the ordinary wa plurality of similarly constructedlocking devices are preferably attached both to the window frame and theupper sash. The locking devices attached to the window frame are securedto the vertical inner stiles intermediate the ends thereof whereby theupper end of the lower sash may be engaged to lock said sash in closingposition. The locking devices secured to the upper sash are adapted toengage the upper end of the lower sash when said upper sash is in bothSpecification of Letters Patent.

Patented Aug. 8, 1916.

serial No. 78,171.

closed andpartially opened positions. Each locking device includes abracket 8 secured 1n position by means of a plurality of screws or otherfastening elements 9 and upon the inner longitudinal edge of the bracketthe same is provided with spaced bearings 10 and 11, the latter being ofgreater length than the former. The locking member, generally indicatedby the nun meral 12, consists of an elongated body portion formed from asingle length of rod and having its upper end bent laterally at rightangles to the body portion to provide a finger piece or grip 13. Theupper end of the body portion 12 adjacent the finger piece 13 ispivotally mounted in the upper bearing 10 of the bracket 8 and the lowerend of said body portion is similarly mounted in the bearing 11. Thepart of said ,body portion between the upper and lower bearings 10 and11 is bent to provide an intermediate locking portion 14 which is ofangular formation, as shown in Fig. 2, the inner part of the lockingportion extending at right angles to the body of the locking `memberwhile the extremity 15 of said portion 14 is bent at right angles tosaid inner part thereof. The lower extremity of each locking member 12is also bent laterally to provide a lower locking portion 16 having anupwardly and inwardly inclined extremity 17 which may also be employedas a linger grip, if desired.

When both sashes are closed and it is desired to lock the same thelocking members 12 secured to the window frame are swung to the positionshown in Fig. 2 whereupon the extremity 15 of the locking portion 14:will engage the upper end of the lower sash 7 and prevent the same frombeing raised. The locking members 12 secured to the upper sash may alsobe swung to the position shown in Fig. 2 whereupon the lower lockingportion 16 thereof will also engage the upper end of the lower sash 7and not only prevent lowering of the upper sash but also raising of thelower sash. Should it be desired tol open or lower the upper sash, forthepurpose of ventilation, the locking members 12 secured to the uppersash may be swung to the dotted line position shown at the right in Fig.4L whereupon the lower locking portions 16 of said locking members willbe moved to a position out of alinement with the lower sash and theupper locking portions 14 will be swung outwardly into 11G kannalinement with said lower sash. This will permit of the upper sash beinglowered until the bottom of the extremity of the locking portion 14E ofeach locking member comes into contact with the upper end of the lowersash 7 thus preventing further lowering of said upper sash. By lettingthe locking members 12 secured to the window frame remain in theiroriginal positions, above described, the lower sash will still remainlocked. For 'purposes of proper ventilation a Ventilating screen of anypre'fer'i'ed'construction may be Isecured lin 'position at the outer anduppei end of the' window frame thus covering the opening made by thelowering of the window sash tothe position just described. In order tolower the upper sash toits lowermost position, or in otherV words,completely open the same, the locking members 12 secured to said uppersashv must be swung to the dotted line position shown at the left ofFig. l whereupon both of the locking portions 14 and 16 will be out ofvertical alinement with'the lower sash 7; and when in this position saidupper sash Gf may be lowcredii desired.V In order to per- Init thelocking members 12 secured to the upper sash to be swung to the positionlastdescribed the brackets 8 in, which the locking members are mountedare secured to-the upper sash adjacent the inner edges thereof so thatthe extremity 15 of the locking portion lt'will clear the inner edge ofthe sash and project inwardly toward the pane of glass.

The lower sash 7 may be opened by moving the locking members 12 securedto the window frame to the dotted line position shown in Fig. l wherebysaid lower sash may be completely opened when the locking members 1Q,secured to the upper sash are in the position last described. But theopening of the window may be limited by first swinging the lockingmembers 12 secured tothe up-v per sash to the position shownj at therightin Fig. L1 whereupon the upper` end of the lower sash will contactthe lockingextremities 15 and thus prevent further opening of said lowersash.-

What is claimed is: v l er A locking device 'for 'windows including apivoted locking member formed from a: single length ofl rod material'and berit atone end to provide a locking poiitioiiladapted lto be swunginto and out of the lp'a'th 'ofmove-- ment of one of the sashes', said'member also having intermediatelit's endslanother angupath ofmovementthereof. 1

" i .L Grito-neil; vv. 'sfriinfrA l Copies of this patentmaiyfbeobtainedv for ve'centsjeach,*addressing the Commissioner of Patents,Washington, D. C.

